The growth of the US prison population under a system of mass incarceration has now gone on for 50 years, according to The Sentencing Project. While awareness and political discourse about US prison expansion has grown in the last decade, we are still far from dismantling this violent and inhumane system of captivity. Nicole Porter from The Sentencing Project joins Rattling the Bars to explain her organization's new campaign to fight mass incarceration, '50 years and a wake up.'